BS ISO 16031-1:2002(2010) Aerospace fluid systems — O - rings, inch series : Inside diameters and cross sections, tolerances and size - identification codes — Part 1 : Close tolerances for hydraulic systems
2008BS ISO 16031-1:2008 Aerospace fluid systems. O-rings, inch series. Inside diameters and cross sections, tolerances and size-identification codes. Close tolerances for hydraulic systems
2008BS ISO 16031-1:2002 Aerospace fluid systems. O-rings, inch series. Inside diameters and cross sections, tolerances and size-identification codes - Close tolerances for hydraulic systems